Swap the R4600 for a R4400 or R5000? I have a R4600, thus share your pain. Linux/MIPS git has been flaky on these things ever since 2.6.0 was released. Kernel 2.4.* works fine however.

It's likely that IP22 will be dropped eventually, due to bitrot in the current kernels, and an unwillingness from upstream devs (who know more about IP22 than I do) to fix the problems._________________Stuart Longland (a.k.a Redhatter, VK4MSL)
I haven't lost my mind - it's backed up on a tape somewhere...